Noob Fuel Question!

Hugoneus · 02-07-2010, 11:21 PM

Do you guys always put premium fuel in the 370Z? What happens if you put the regular basic fuel?

Thanks!

m4a1mustang · 02-07-2010, 11:25 PM

Our engines are designed to run on premium fuel. The higher octane rating means a higher resistance to premature detonation. I run 93, but some states offer only 91 as the highest octane and that will work.

If for some reason you have to put 87 in the car, go very easy on the revs as you don't want any pinging, and refill with high octane as soon as possible.

Sibze · 02-07-2010, 11:29 PM

Quote:

Originally Posted by m4a1mustang

Our engines are designed to run on premium fuel. The higher octane rating means a higher resistance to premature detonation. I run 93, but some states offer only 91 as the highest octane and that will work.

If for some reason you have to put 87 in the car, go very easy on the revs as you don't want any pinging, and refill with high octane as soon as possible.

Is it not true that you would want to use 91 for pure performance though??? I know 93 is better on the engine however my understand is that the lower octane you CAN use in your car the more performance you will receive from the engine.

I could be totally wrong

kannibul · 02-07-2010, 11:32 PM

Quote:

Originally Posted by Hugoneus

Do you guys always put premium fuel in the 370Z? What happens if you put the regular basic fuel?

Thanks!

The engine will esplode if you put anything less than 91octane in.

Sibze · 02-07-2010, 11:34 PM

Quote:

Originally Posted by kannibul

The engine will esplode if you put anything less than 91octane in.

It'll esplode yo!

Hugoneus · 02-07-2010, 11:37 PM

Haha... I don't want the engine to esplode.

But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?

kannibul · 02-07-2010, 11:38 PM

Quote:

Originally Posted by Sibze

Is it not true that you would want to use 91 for pure performance though??? I know 93 is better on the engine however my understand is that the lower octane you CAN use in your car the more performance you will receive from the engine.

I could be totally wrong

You are totally wrong, and 93 is not better.

Octane rating has everything to do with how slowly the fuel burns and how resistant it is to detonating under compression. Higher octane = slower burn/more resistant.

This is compensated by advancing the timing. The car is "programmed" to use 91 octane fuel, meaning the advanced timing is already active. Using higher octane gas yeilds no benefit as the car can't detect higher rated fuel. *(this is true of all vehicles!)

If the car detects knock, (either by detonation or by the fuel burning too quickly/early by using under-91 octane fuel), the car WILL retard the timing and enrichen the fuel map until the condition is minimized.

That said, it says PLAIN AS DAY in the manual to use 91 octane (or higher) gasoline (again, not because higher octane gas will increase performance, but because it's safer in the sense that it's less likely to knock/detonate), but in case of emergency you can use 87/89 octane, but do not fill the tank, do not drive the car "hard", and fill the tank with 91 as soon as it is available.

So, RTFM.

m4a1mustang · 02-07-2010, 11:38 PM

Quote:

Originally Posted by Hugoneus

Haha... I don't want the engine to esplode.

But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?

Well yes... you will blow up the engine with 87... premature detonation = bad!

m4a1mustang · 02-07-2010, 11:39 PM

Quote:

Originally Posted by kannibul

You are totally wrong, and 93 is not better.

Octane rating has everything to do with how slowly the fuel burns and how resistant it is to detonating under compression. Higher octane = slower burn/more resistant.

This is compensated by advancing the timing. The car is "programmed" to use 91 octane fuel, meaning the advanced timing is already active. Using higher octane gas yeilds no benefit as the car can't detect higher rated fuel. *(this is true of all vehicles!)

If the car detects knock, (either by detonation or by the fuel burning too quickly/early by using under-91 octane fuel), the car WILL retard the timing and enrichen the fuel map until the condition is minimized.

That said, it says PLAIN AS DAY in the manual to use 91 octane (or higher) gasoline (again, not because higher octane gas will increase performance, but because it's safer in the sense that it's less likely to knock/detonate), but in case of emergency you can use 87/89 octane, but do not fill the tank, do not drive the car "hard", and fill the tank with 91 as soon as it is available.

So, RTFM.

+1

RTFM... Nice!!!

kannibul · 02-07-2010, 11:39 PM

Quote:

Originally Posted by Hugoneus

Haha... I don't want the engine to esplode.

But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?

I'm not joking. It will explode in the engine. It won't burn, it will explode.

It's called detonation, which is bad for an engine.

Sibze · 02-07-2010, 11:40 PM

He wasn't really joking. Don't use anything under 91... the engine is not made for it.

The hole idea behind the octane level is:

The higher the octane level the more pressure that will build before the fuel ignites. If not enough pressure builds your engine will basically misfire… It wont sounds very good.

Hugoneus · 02-07-2010, 11:42 PM

Ok, I understand now. Curse expensive fuel! Curse it to hell I say!

Sibze · 02-07-2010, 11:42 PM

Quote:

Originally Posted by kannibul

You are totally wrong, and 93 is not better.

Octane rating has everything to do with how slowly the fuel burns and how resistant it is to detonating under compression. Higher octane = slower burn/more resistant.

This is compensated by advancing the timing. The car is "programmed" to use 91 octane fuel, meaning the advanced timing is already active. Using higher octane gas yeilds no benefit as the car can't detect higher rated fuel. *(this is true of all vehicles!)

If the car detects knock, (either by detonation or by the fuel burning too quickly/early by using under-91 octane fuel), the car WILL retard the timing and enrichen the fuel map until the condition is minimized.

That said, it says PLAIN AS DAY in the manual to use 91 octane (or higher) gasoline (again, not because higher octane gas will increase performance, but because it's safer in the sense that it's less likely to knock/detonate), but in case of emergency you can use 87/89 octane, but do not fill the tank, do not drive the car "hard", and fill the tank with 91 as soon as it is available.

So, RTFM.

OK WOW WOW WOW WOW

Is that not what I said??? Because thats what I meant...

93 would burn cleaner IE be better for the engine... 91 WILL GIVE YOU BETTER performance...

No????

m4a1mustang · 02-07-2010, 11:43 PM

Quote:

Originally Posted by Hugoneus

Ok, I understand now. Curse expensive fuel! Curse it to hell I say!

Blame it on Lindsay Lohan, that bitch!

Trips · 02-07-2010, 11:43 PM

Heres a thread on this topic, a simple search is all it took!!!!
What type of fuel do you put in?

02-07-2010, 11:21 PM	#1 (permalink)
Hugoneus Base Member Join Date: Feb 2010 Location: Milky Way Posts: 245 Drives: 2010 370z T+S+N 6MT Rep Power: 15	Noob Fuel Question! Do you guys always put premium fuel in the 370Z? What happens if you put the regular basic fuel? Thanks!

02-07-2010, 11:25 PM	#2 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Our engines are designed to run on premium fuel. The higher octane rating means a higher resistance to premature detonation. I run 93, but some states offer only 91 as the highest octane and that will work. If for some reason you have to put 87 in the car, go very easy on the revs as you don't want any pinging, and refill with high octane as soon as possible. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-07-2010, 11:43 PM	#15 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	Heres a thread on this topic, a simple search is all it took!!!! What type of fuel do you put in? __________________

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02-07-2010, 11:37 PM	#6 (permalink)
Hugoneus Base Member Join Date: Feb 2010 Location: Milky Way Posts: 245 Drives: 2010 370z T+S+N 6MT Rep Power: 15	Haha... I don't want the engine to esplode. But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?

02-07-2010, 11:40 PM	#11 (permalink)
Sibze A True Z Fanatic Join Date: May 2009 Location: Ontario, Canada Posts: 16,202 Drives: In your way Rep Power: 63	He wasn't really joking. Don't use anything under 91... the engine is not made for it. The hole idea behind the octane level is: The higher the octane level the more pressure that will build before the fuel ignites. If not enough pressure builds your engine will basically misfire… It wont sounds very good.

02-07-2010, 11:42 PM	#12 (permalink)
Hugoneus Base Member Join Date: Feb 2010 Location: Milky Way Posts: 245 Drives: 2010 370z T+S+N 6MT Rep Power: 15	Ok, I understand now. Curse expensive fuel! Curse it to hell I say!